JP2013533982A - Optical axis alignment device for video shooting - Google Patents

Abstract

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical axis aligning device for a camera for photographing a stereoscopic image, and to an optical axis aligning device for photographing a stereoscopic image that assists so that the optical axes of left / right eye cameras arranged horizontally are located on the same plane. A first reference portion that is spaced apart from the left / right eye camera and has a first reference line formed so as to be transparent, the first reference portion being spaced apart from the first reference portion; A second reference line formed with a second reference line located on the same plane as the first reference line; and the optical axis of any one of the left / right-eye cameras is the first reference line and the second reference line An optical axis aligning device for stereoscopic video shooting, including an aligning unit that moves the first reference unit and the second reference unit so as to be positioned on the same plane formed by a reference line, and using a conventional sign board Remove vertical errors that occur when aligning optical axes Can, whereby there is advantage to allow shooting excellent stereoscopic video precision.

Description

  The present invention relates to an alignment apparatus and an alignment method, and more particularly to an optical axis alignment apparatus and an optical axis alignment method of a camera for taking an image.

  Humans feel a stereoscopic effect due to the parallax between the left eye and the right eye, that is, the difference in information viewed between the left eye and the right eye. For this reason, in order to realize a stereoscopic image, it is common to shoot using two cameras.

  In the drawings, FIG. 1 is a schematic front view showing a state in which the optical axes of left / right eye cameras configured for photographing a stereoscopic image are horizontally aligned, and FIG. 2 is a left / right eye camera when photographing a stereoscopic image. It is a conceptual diagram for demonstrating the error which arises without the optical axis of not aligning horizontally.

  When the optical axis is a line connecting the center of the camera lens and the center of the image sensor (hereinafter referred to as the optical axis), when the two cameras are horizontally spaced, the optical axes of the two cameras are on the same plane. Come to be located. Regardless of the arrangement method of the two cameras (parallel axis method, orthogonal method), it is essential in stereoscopic video shooting that the optical axes of the two cameras concerned are located on the same plane and are horizontally aligned.

  As can be seen in FIG. 1, the horizontal alignment state of the two camera optical axes is such that when the left eye camera (A) and the right eye camera (B) are spaced apart by a certain distance (D1), the left eye camera (A) The optical axis (OA1) and the optical axis (OA2) of the right-eye camera (B) are positioned on the same plane (P).

When shooting a stereoscopic image, such a horizontal alignment state of the two camera optical axes is a precondition for obtaining an excellent quality stereoscopic image. If the two camera optical axes are not aligned horizontally, the image quality of the stereoscopic image will deteriorate, and there will be a disadvantage that the post-correction work will be long to compensate for this, and even if the post-correction work is performed, a high-quality stereoscopic image will be obtained. Has its limits.
Hereinafter, this will be described in detail with reference to FIG.

  As can be seen in FIG. 2, when it is assumed that a stereoscopic image is shot while focusing on a subject separated by a distance of D2, first, one of the main cameras of the left / right cameras (FIG. 2). The optical axis alignment of A) is executed. The alignment sign board (S) is arranged at a distance separated by D2, and the horizontal line through which the optical axis (OA1) of the camera (A) passes is aligned with the horizontal line displayed on the alignment sign board (S). At this time, in the case of a horizontal line through which the optical axis (OA1) of the camera (A) passes, it is displayed on the viewfinder of the corresponding camera (A) or a separate monitor device that displays the viewfinder.

Thereafter, the rig of the camera (B) is aligned so that the horizontal line through which the optical axis (OA2) of the remaining camera (B in FIG. 2) passes is aligned with the horizontal line displayed on the alignment sign board (S). Then, the optical axis alignment of the remaining cameras (B) is performed.
After that, the two cameras are rotated to control the main vision so as to focus.

However, when the camera rotates for camera movement or focus and main visual control, or due to errors in the rig that moves the camera, the left / right eye camera optical axis position deviates on the same plane.
Particularly, when the rotation center of the gonio stage is not located on the optical axis of the camera, there arises a problem that the optical axis of the left / right eye camera is not horizontally aligned.

In such a case, as shown in FIG. 2, at the point where the alignment sign board (S) is located (a point separated from the camera by D2), the left / right eye camera (A, B) optical axis (OA1) , OA2) is considered to be horizontally aligned, but the left / right eye camera (A, B) optical axes (OA1, OA2) are not horizontally aligned where the alignment signboard (S) is not located. Can do.
Since the two optical axes (OA1, OA2) are not located on the same plane, the vertical error (r) of the optical axis alignment becomes larger as the distance from the left / right eye camera (A, B) increases.

  In order to remove such vertical error (r), even if the rig of the corresponding camera is adjusted, the signboard for alignment (S) is caused by the error of the rig itself of the left / right eye camera (A, B). It is extremely difficult to achieve horizontal alignment of the optical axis at a point where is not located.

  For this reason, in the field, the alignment state of the optical axes is confirmed by using a plurality of sign boards (S) at regular intervals, but this is an extremely troublesome work and has a disadvantage that the whole photographing time becomes long. .

  For this reason, stereoscopic video shooting must be performed with some post-correction work in mind, and even if the vertical error (r) of the optical axis alignment is small, it is large like a movie. Under the condition that stereoscopic images are realized on the screen, there is a risk of causing eye strain and dizziness of the viewer. Therefore, ensuring high image quality of the stereoscopic images by aligning the optical axis prevents the viewer's visual harm. This is an extremely demanding matter in the dimension.

  Accordingly, the present invention has been devised to solve the above-described problems, and prevents an alignment error from occurring in the optical axis alignment of the left / right-eye camera when shooting a stereoscopic image. An object of the present invention is to provide an optical axis alignment apparatus and an optical axis alignment method for stereoscopic video photography.

  In addition, the optical axis alignment device and the optical axis for stereoscopic video shooting that can execute the optical axis alignment of the left / right eye camera more easily and precisely and reduce the shooting time while securing a high-quality stereoscopic video. Another object is to provide an alignment method.

  It is still another object of the present invention to provide an optical axis alignment apparatus and an optical axis alignment method for stereoscopic video shooting that automatically execute the optical axis alignment of the left / right eye camera without the user's operation.

  In order to achieve the technical problem described above, according to the idea of the present invention, a first reference line is formed, and is formed so as to be seen through; A second reference part on which a second reference line located on the same plane as the first reference line is formed; and any one of a left eye camera and a right eye camera coupled to the first reference part and the second reference part An alignment unit that provides movement of the first reference unit and the second reference unit so that the optical axis of one of the cameras is positioned on the same plane formed by the first reference line and the second reference line. An optical axis alignment device for video shooting can be provided.

Preferably, the first reference portion has an open frame shape, and the first reference line may be formed of a wire connecting one side and the other side of the open frame.
Preferably, the first reference portion has an open frame shape, and the first reference line may be formed on a plate that is coupled to the open frame and has light transmittance.
Preferably, the plate may be formed with at least one first vertical reference line orthogonal to the first reference line.

Preferably, the second reference portion has an open frame shape, and the second reference line may be formed on a plate coupled to the open frame.
Preferably, the plate is formed of a mirror, and the second reference line is formed of a reflection image of the first reference line reflected on the mirror.
Preferably, at least one second vertical reference line orthogonal to the second reference line may be formed on the plate.
Preferably, the plate is formed of a mirror, and the second vertical reference line is formed of a reflection image of the first vertical reference line reflected on the mirror.

Preferably, the plate may be formed of a translucent material.
Preferably, the light emitting device may further include a light source unit disposed behind the second reference unit and irradiating light in the first reference unit direction.
Preferably, the light source unit may be formed of an LED.
Preferably, the first reference portion and the second reference portion may be integrally coupled and further include a main body portion that is coupled to the alignment portion.

Preferably, the alignment unit is installed in a plurality of stages below the first reference unit and the second reference unit, and the left and right goniostages move the first reference unit and the second reference unit in a left / right arc; A front-rear gonio stage for arcing the first reference portion and the second reference portion in the forward / backward direction; and a left / right stage for linearly moving the first reference portion and the second reference portion in the left / right direction; .
Preferably, the apparatus may further include an elevating part that moves the first reference part and the second reference part in an upward / downward direction.
Preferably, the elevating unit may be installed between the upper / lower gonio stage and the left and right stages.

Preferably, the elevating part is connected to a boss part including a handle part that can be rotated and an upper part of the boss part, and is a lead screw that linearly moves upward / downward in conjunction with the rotation of the handle part ( lead screw) moving part.
Preferably, a rotation unit that rotates the first reference unit and the second reference unit may be further included.
Preferably, the rotating unit may be stacked on the lifting unit.
Preferably, the left and right gonio stages may be stacked on the upper / lower gonio stages.

  Preferably, the alignment means and the first horizontal line passing through the optical axis of the one camera, and the first reference line and the second reference line can be aligned and adjusted so that power transmission is possible. And an alignment driving unit for providing a driving force to the alignment unit.

  Preferably, the alignment driving unit includes a first vertical line passing through an optical axis of the one camera and at least one first vertical reference line orthogonal to the first reference line. Providing a driving force to the aligning means so that alignment adjustment of any one of the vertical reference line and at least one second vertical reference line orthogonal to the second reference line is possible; It is characterized by.

  Preferably, the image data of the first reference line and the second reference line is input through the one camera, and a horizontal alignment error between the first horizontal line and the first reference line and the second reference line is extracted. An alignment control unit for generating a horizontal alignment drive signal that compensates for the horizontal alignment error, is coupled to the alignment means so as to be able to transmit power, receives the horizontal alignment drive signal, receives the first horizontal line and the first reference It may further include an alignment driving unit that provides a driving force to the alignment unit so that the line and the second reference line are aligned.

  Preferably, the horizontal alignment error includes the first horizontal line, a slope formed by the first reference line or the second reference line, a separation distance between the first reference line and the second reference line, and the first line that is horizontally aligned. The first reference line, the second reference line, and the first horizontal line may be included.

  The alignment control unit inputs image data of at least one first vertical reference line orthogonal to the first reference line and at least one second vertical reference line orthogonal to the second reference line through the one camera. Receiving a first vertical line passing through the optical axis of the one camera and a predetermined vertical alignment error between the first vertical reference line and the second vertical reference line, and compensating for the vertical alignment error. The alignment driver receives the vertical alignment driving signal and drives the alignment unit to align the first vertical line with the predetermined first vertical reference line and the second vertical reference line. It is characterized by providing power.

  Preferably, the predetermined first vertical reference line is a first vertical reference line closest to the first vertical line among the at least one first vertical reference line, and the predetermined second vertical reference line. Is a second vertical reference line closest to the first vertical line among the at least one second vertical reference line.

  Preferably, the vertical alignment error includes a separation distance between the first vertical reference line and the second vertical reference line, and a separation between the first vertical reference line, the second vertical reference line, and the first vertical line that are vertically aligned. It can be configured to include distance.

  Preferably, the alignment driving unit includes a left-right gradient alignment driving unit that provides a driving force for arcing the first reference unit and the second reference unit left / right, and the first reference unit and the second reference unit in front of each other. An anteroposterior gradient alignment driving unit for providing a driving force for arcing later, and an upper / lower alignment driving unit for providing a driving force for linearly moving the first reference unit and the second reference unit up / down, The left / right gradient alignment driver, the front / rear gradient alignment driver, and the up / down alignment driver may be arranged in multiple stages.

  Preferably, the alignment driving unit further includes a left / right alignment driving unit that provides a driving force for linearly moving the first reference unit and the second reference unit to the left / right. The driving unit, the upper / lower alignment driving unit, and the left / right alignment driving unit are arranged in multiple stages.

  Preferably, the alignment driving unit further includes a rotation driving unit that provides a driving force for rotating the first reference unit and the second reference unit, and the gradient alignment driving unit, the front / rear gradient alignment driving unit, and the upper / lower alignment. The drive unit, the left / right alignment drive unit, and the rotation drive unit are arranged in multiple stages.

  Preferably, the alignment control unit receives image data of the first reference line and the second reference line that are horizontally aligned through the other of the left / right eye cameras, and passes through the optical axis of the other camera. A horizontal alignment error of the second horizontal line and the first reference line and the second reference line that are horizontally aligned, a horizontal alignment rig driving signal that compensates for the horizontal alignment error is generated, and the movement of the other camera rig is controlled The horizontal alignment rig driving signal is transmitted to the rig control unit.

  At this time, the horizontal alignment error includes the second horizontal line, a gradient formed by the first reference line and the second reference line horizontally aligned, and the first reference line and the second reference horizontally aligned with the second horizontal line. It can be configured to include a line separation.

  Preferably, the rig control unit receives the horizontal alignment rig driving signal and receives the second horizontal line and the first reference line and the second reference line that are horizontally aligned so that the second camera is horizontally aligned. It is characterized by controlling the movement of the rig.

  Preferably, the alignment control unit receives image data of the predetermined first vertical reference line and the second vertical reference line through the other of the left eye camera and the right eye camera, and receives the predetermined first vertical reference line. Generating a vertical alignment rig driving signal for feedback control so that the line and the second vertical reference line and the second vertical line passing through the optical axis of the other camera are vertically aligned, and controlling the movement of the other camera rig It transmits to a rig control part, It is characterized by the above-mentioned.

  The rig control unit receives the vertical alignment rig drive signal and receives a second vertical line passing through the optical axis of the other camera, and the predetermined first vertical reference line and second vertical reference line that are vertically aligned. The movement of the rig of the other camera is controlled so that they are aligned.

  According to still another aspect of the present invention, there is provided an optical axis alignment method using the stereoscopic optical axis alignment apparatus according to claim 1, wherein: a) one of left / right eye cameras is passed through the first camera. Receiving a reference line, a second reference line, and image data of at least one first vertical reference line and second vertical reference line orthogonal to the first reference line and the second reference line, respectively; b) Performing alignment of the first horizontal line passing through the optical axis of the one camera and the first reference line and the second reference line based on the image data of the first reference line and the second reference line; c ) Based on the input at least one first vertical reference line and second vertical reference line, a first vertical line passing through the optical axis of the one camera, and the predetermined first vertical reference line and second vertical reference line Performing line alignment; d The first reference line and the second reference line aligned in step b) and the at least one first vertical reference line and the second vertical reference aligned in step c) through the other of the left / right eye cameras. A step of receiving input of line image data; e) a second horizontal line passing through the optical axis of the other camera based on the image data of the first reference line and the second reference line input in step d); D) performing the alignment of the predetermined first reference line and the second reference line input in step d), and f) an image of the first vertical reference line and the second vertical reference line input in step d). Performing alignment of the second vertical line passing through the optical axis of the other camera based on the data and the predetermined first vertical reference line and the second vertical reference line input in step d). Projection It is possible to provide a photographing optical axis alignment method.

  Preferably, the step b) includes: b-1) displaying the first reference line and the second reference line on the screen of the first horizontal line; b-2) displaying the first horizontal line; The alignment unit may be driven such that the first reference line and the second reference line are horizontally aligned.

  Preferably, the step b) includes a step b-3) extracting a slope formed by the first horizontal line and the first reference line or the second reference line and a separation distance between the first reference line and the second reference line. B-4) compensating for the gradient, compensating for the separation distance between the first reference line and the second reference line, and driving the alignment unit so that the first reference line and the second reference line are horizontally aligned; -5) extracting the distance between the first reference line and the second reference line horizontally aligned in b-4) and the first horizontal line; and b-6) the distance extracted in b-5). And driving the alignment unit so that the first horizontal line and the horizontally aligned first and second reference lines are horizontally aligned.

  Preferably, c) includes c-1) displaying the first vertical reference line and the second vertical reference line on the screen of the first vertical line; and c-2) displaying the first vertical line. The alignment unit may be driven such that a line is vertically aligned with the first vertical reference line and the second vertical reference line.

  Preferably, the c) step includes c-3) a step of extracting a separation distance between the first vertical reference line and the second vertical reference line; c-4) a compensation of the separation distance extracted in the c-3). Driving the alignment unit so that the first vertical reference line and the second vertical reference line are vertically aligned; c-5) the first vertical reference line and the second vertical line aligned in c-4); Extracting a separation distance between a vertical reference line and the first vertical line; and c-6) compensating for the separation distance extracted in c-5), the first vertical line and the vertically aligned first vertical reference. Driving the alignment unit such that the line and the second vertical reference line are vertically aligned.

  Preferably, the e) step includes e-1) displaying the first reference line and the second reference line horizontally aligned in the c) on the second horizontal line screen; and e-2) the displayed Driving a rig of the other camera such that a second horizontal line and the first reference line and the second reference line are horizontally aligned.

  Preferably, the step e) includes the step e-3) extracting the second horizontal line, the gradient formed by the first reference line or the second reference line, and the separation distance between the first reference line and the second reference line. E-4) compensating for the slope, compensating for the separation between the first reference line and the second reference line, and rigging the other camera so that the first reference line and the second reference line are horizontally aligned. E-5) extracting a distance between the first reference line and the second reference line horizontally aligned in the e-4) and the second horizontal line; and e-6) the e- Compensating for the separation distance extracted in 5) and driving the rig of the other camera so that the second horizontal line and the horizontally aligned first and second reference lines are horizontally aligned; Can be included.

  Preferably, the step f) includes: f-1) displaying the predetermined first vertical reference line and the second vertical reference line input in the step d) on the screen of the second vertical line; and f- 2) driving the rig of the other camera so that the displayed first and second vertical reference lines are aligned with the second vertical line.

  Preferably, the step f) feedback-controls the rig of the other camera so that the second vertical line and the first vertical reference line and the second vertical reference line are vertically aligned. Features.

  An optical axis alignment apparatus and an optical axis alignment method for stereoscopic video shooting according to the present invention provide a plane formed by a first reference line and a second reference line as a reference for optical axis alignment, thereby providing light using a sign board. The present invention provides an advantageous effect that a vertical error generated when the axes are aligned is basically removed, and a high-quality stereoscopic image can be obtained.

  In addition, the shooting time can be dramatically shortened by removing the inconvenience of having to perform alignment work using a large number of signboards in order to check the horizontal alignment state at the time of shooting. It provides the advantageous effect of being able to.

  In addition, when considering a 3D video shooting environment that only uses a camera rig that has not been standardized, the optical axis alignment of the left / right eye camera can be easily and accurately performed while using individual camera rigs. It provides the advantageous effect that it can be carried out.

  The optical axis alignment apparatus and the optical axis alignment method for stereoscopic video shooting according to the present invention can automatically align the optical axes of the left / right eye cameras through the alignment control unit and the alignment driving unit without any user operation. By being configured, there is an advantage that not only the optical axis alignment of the left / right eye camera can be easily performed but also the entire imaging time can be dramatically reduced by performing the optical axis alignment quickly. .

  In addition, the left and right eye cameras are precisely obtained by extracting the alignment error between the first reference line and the second reference line and the optical axis not only by the user's naked eye but by quantifying and extracting the optical axis based on this. This provides an advantageous effect that the optical axis alignment can be performed.

It is the front schematic which shows a mode that the optical axis of the left / right eye camera comprised for imaging | photography of a three-dimensional image was aligned horizontally. It is a conceptual diagram for explaining an error that occurs when the optical axis of the left / right eye camera is not horizontally aligned when a stereoscopic image is captured. It is a front view for demonstrating the structure of one Embodiment of the optical-axis alignment apparatus for stereoscopic video imaging concerning this invention. It is a side view for demonstrating the structure of the 1st reference | standard part and 2nd reference | standard part couple | bonded with the main-body part shown in FIG. It is the figure shown in order to demonstrate the horizontal line and vertical line which pass a camera optical axis. It is the front view shown in order to demonstrate the 1st reference | standard part shown in FIG. It is the side view shown in order to demonstrate the 1st reference | standard part shown in FIG. It is the front view which showed the plate couple | bonded with the 1st reference | standard part and including a 1st reference line and a 1st perpendicular | vertical reference line. It is the front view shown in order to demonstrate the 2nd reference | standard part shown in FIG. FIG. 10 is a front view showing a plate inserted into the second reference portion shown in FIG. 9 and including a second reference line. It is the front view which showed the shape of the main-body part shown in FIG. It is the side view which showed the shape of the main-body part shown in FIG. 1 is a configuration diagram illustrating an alignment driving unit of an embodiment of an optical axis alignment device for stereoscopic video photography according to the present invention. FIG. It is the figure which showed the mode of the viewfinder of the camera which showed the 1st horizontal line before a horizontal alignment, the 1st reference line, and the 2nd reference line. It is the figure which showed the mode of the viewfinder of the camera which showed the 1st reference line by which the gradient was compensated, and the 2nd reference line in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed the further another state of the 1st reference line and the 2nd reference line by which the gradient was compensated in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed the separation distance of the 1st reference line and the 2nd reference line by the drive direction of the front-back gradient alignment drive part. It is the figure which showed the mode of the viewfinder of the camera which showed the separation distance of the 1st reference line and the 2nd reference line by the drive direction of the front-back gradient alignment drive part. It is the figure which showed the mode of the viewfinder of the camera which showed a mode that the 1st reference line and the 2nd reference line aligned in the state of FIG. 15 or FIG. It is the figure which showed the mode of the viewfinder of the camera which showed a mode that the 1st horizontal line, the 1st reference line, and the 2nd reference line were horizontally aligned in the state of FIG. FIG. 3 is a conceptual diagram for explaining a state in which optical axes are aligned in an embodiment of an optical axis aligning device for stereoscopic video photography according to the present invention in a parallel axis camera array system. FIG. 5 is a conceptual diagram for explaining a state in which optical axes are aligned by an embodiment of an optical axis aligning device for stereoscopic video shooting according to the present invention in an orthogonal camera arrangement system. It is the figure which showed the mode of the viewfinder of the camera which showed the 1st perpendicular line before a vertical alignment, the 1st perpendicular | vertical reference line, and the 2nd perpendicular | vertical reference line. It is the figure which showed the mode of the viewfinder of the camera which displayed the 1st vertical reference line and 2nd vertical reference line which were horizontally aligned in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed a mode that the 1st horizontal line, the 1st reference line, and the 2nd reference line were vertically aligned in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed the 1st reference line and the 2nd reference line which were horizontally aligned with the 2nd horizontal line of the other camera before horizontal alignment, and the optical axis of one camera. It is the figure which showed the mode of the viewfinder of the camera which showed the 1st reference line and the 2nd reference line by which the gradient was compensated in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed a mode that the 1st reference line and the 2nd reference line aligned in the state of FIG. It is the figure which showed the mode of the viewfinder of the camera which showed a mode that the 2nd horizontal line, the 1st reference line, and the 2nd reference line were horizontally aligned in the state of FIG. (A) is the figure which showed the mode of the viewfinder of the camera which showed the 2nd perpendicular line before a vertical alignment, a 1st perpendicular | vertical reference line, and a 2nd perpendicular | vertical reference line. (B) is a figure shown in order to demonstrate the alignment error of a 1st vertical reference line and a 2nd vertical reference line, and the other camera in a parallel axis type camera arrangement system. (A) is the figure which showed the mode of the viewfinder of the camera which showed the 2nd perpendicular line after vertical alignment, the 1st perpendicular | vertical reference line, and the 2nd perpendicular | vertical reference line. (B) is a figure shown in order to demonstrate the vertical alignment of a 1st perpendicular | vertical reference line and a 2nd perpendicular | vertical reference line with respect to the optical axis of the other camera in a parallel axis type camera arrangement system. 3 is a flowchart shown for explaining an optical axis alignment method for stereoscopic video shooting according to the present invention. FIG. 33 is a flowchart shown for explaining a process of manually performing horizontal alignment in step S200 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of automatically performing horizontal alignment in step S200 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of manually performing vertical alignment in step S300 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of automatically performing vertical alignment in step S300 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of manually performing horizontal alignment in step S500 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of automatically performing horizontal alignment in step S500 shown in FIG. FIG. 33 is a flowchart shown for explaining a process of manually performing vertical alignment in step S600 shown in FIG.

Hereinafter, a preferred embodiment of an optical axis alignment apparatus for stereoscopic video shooting according to the present invention will be described.
Advantages and features of the present invention, or methods for achieving them, will become apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various forms different from each other. However, this embodiment is provided in order to make the disclosure of the present invention complete, and to fully inform a person having ordinary knowledge in the technical field to which the present invention belongs the scope of the invention. Is defined only by the claims.
Furthermore, in describing the present invention, if it is determined that related known techniques can obscure the gist of the present invention, detailed description thereof will be omitted.

  An optical axis alignment apparatus for stereoscopic video photography according to the present invention is for preventing the above-described error in optical axis alignment. First, the optical axes of left / right eye cameras are horizontally aligned, and vertically aligned in a horizontally aligned state. By doing so, it can be said that it is an optical axis alignment device that finally performs the operation of aligning the optical axis of the left / right eye camera with the subject.

  In the drawings, FIG. 3 is a front view for explaining a configuration of an embodiment of an optical axis alignment device for stereoscopic video photography according to the present invention, and FIG. 4 is a first view coupled to the main body shown in FIG. It is a side view for demonstrating the structure of 1 reference | standard part and 2nd reference | standard part.

  Such drawings are shown for conceptually clear understanding of the structural relationship with respect to the preferred embodiments of the present invention. As a result, various modifications of the illustration are expected, but they are shown in the drawings. There is no need to be largely limited to specific forms.

  3 and 4, the main body 100 of the optical axis alignment device for stereoscopic video shooting according to an embodiment includes the first reference unit 110 disposed in front of the left / right eye camera and the first reference unit 110. The first reference part 110 and the second reference part are coupled to the second reference part 120 spaced apart from the first reference part 110 and the lower part of the first reference part 110 and the second reference part 120. The configuration includes an alignment unit 130 that applies motion to 120.

Prior to describing the components of such an embodiment, the vertical and horizontal lines passing through the optical axis of the camera will be briefly described with reference to FIG. 5 in order to help understand the horizontal alignment process of the optical axis. .
FIG. 5 is a diagram for explaining a horizontal line and a vertical line passing through the camera optical axis.

Reference numeral 10 in FIG. 5 denotes a horizontal line (hereinafter referred to as a first horizontal line) passing through the optical axis (OA1) of a camera (hereinafter referred to as a reference camera) which is a reference for optical axis alignment among left / right eye cameras. 5 denotes a vertical line passing through the optical axis (OA1) of the reference camera (hereinafter referred to as a first vertical line). The first horizontal line 10 and the first vertical line 20 are displayed on a screen for monitoring a viewfinder or a viewfinder of a reference camera, and are elements serving as a reference for optical axis alignment.
First, since the reference camera is fixed toward the subject, the first horizontal line 10 and the first vertical line 20 described above are positioned with respect to the subject.

6 and 7 are a front view and a side view, respectively, shown to explain the first reference portion shown in FIG.
First, the first reference unit 110 will be described.
The first reference unit 110 is a component that provides a basic alignment reference for optical axis alignment of the reference camera.

In an exemplary embodiment, the outer shape of the first reference portion 110 has an open frame shape, and has a rectangular structure with a rounded side surface, which is illustrated in FIG. However, the present invention is not limited to this, and there is no problem even if it has an unopened plate shape or bar shape.
However, when considering the alignment of the first reference line 111 (to be described later) and the optical axis of the reference camera, it can be said that a rectangular structure in the horizontal direction is preferable for convenience.

  Further, the external shape of the first reference portion 110 having an open frame shape is proposed so that a second reference line 121 described later can be seen from the viewfinder of the left / right-eye camera.

If the first reference part 110 has an unopened plate shape or bar shape, the first reference part 110 is located at the second reference line located opposite to the corresponding first reference part 110. It is preferable to be made of a transparent material so that 121 can be seen.
A plurality of bolt holes may be formed on the outside of the first reference part 110 to be coupled to a body part 140 described later.
Meanwhile, the first reference part 110 includes a first reference line 111 so as to be horizontal to the center part.

  Here, the first reference line 111 means a straight line formed in the first reference portion 110 and serves as a reference for aligning with the first horizontal line (10 in FIG. 5) of the reference camera. Is a line. In one embodiment, the first reference line 111 is formed of a wire connecting the left / right sides of the first reference part 110. This wire is preferably a high carbon steel wire such as a piano wire. This is because the first reference line 111 is required to have high straightness and durability.

Further, although the wire has a bright color for visibility, it can be said that the first reference part 110 is preferably manufactured to have a dark color.
As can be seen in FIGS. 6 and 7, such a wire is fixedly installed on a wire fixing portion 114 provided on both sides of the first reference portion 110.

In the present embodiment, the first reference line using the outer shape and the wire rod of the first reference portion having an open frame shape is proposed, but this is only an example, and the light transmission in which the first reference line is indicated. The first reference portion itself can be coupled to a frame having a predetermined shape, and the present invention can be realized by various embodiments in which a first reference line is formed on the first reference portion itself. Therefore, there is no problem even if the whole or a partial change is added to the first reference portion.
FIG. 8 is a front view illustrating a plate coupled to the first reference portion and including a first reference line and a first vertical reference line.

  As shown in FIG. 8, as another embodiment, a first reference line 111 may be formed on the plate 112, and at this time, the plate 112 may be a second reference portion 120 disposed rearward. It is preferable to be made of a transparent material so that the reference line 121 can be seen. Meanwhile, a plurality of first vertical reference lines 113 may be formed on the plate 112 perpendicular to the first reference lines 111.

Here, the first vertical reference line 113 is a line that serves as a reference for alignment with the first vertical line (20 in FIG. 5) of the reference camera. In the parallel axis camera arrangement method, each first vertical reference line 113 is a reference line. The distance between the lines 113 is formed so as to correspond to the separation distance in the width direction of the left-eye camera and the right-eye camera (D1 in FIG. 1 and FIG. 30 described later). In one embodiment, the interval between the first vertical reference lines 113 may be formed at an interval of 50 mm or 100 mm. This will be described in detail in the vertical alignment process described later. Alignment of the first reference line 111 configured as described above and the first horizontal line 10 of the reference camera is the first requirement for horizontal alignment with respect to the optical axis of the left / right-eye camera, and the first vertical reference line And the first vertical line 20 of the reference camera are the first requirement for vertical alignment with respect to the optical axis of the left / right eye camera.
The first reference unit 110 is disposed in front of the left / right eye camera.
Next, the second reference unit 120 will be described.

  FIG. 9 is a front view for explaining the second reference portion shown in FIG. 3, and FIG. 10 shows a plate inserted into the second reference portion shown in FIG. 9 and including the second reference line. It is the shown front view.

  The second reference unit 120 is a component that, together with the first reference unit 110 described above, provides a reference for horizontal alignment and vertical alignment with respect to the optical axis of the reference camera. A second reference line 121 as shown in FIG. It is formed. Here, the second reference line 121 is formed on the same plane as the first reference line 111 described above, and provides a reference plane serving as a reference for aligning the first horizontal lines 10 of the reference camera.

  The second reference portion 120 on which the second reference line 121 is formed has an open frame shape similar to the outer shape of the first reference portion 110 described above, as can be confirmed in FIG. The point that the first reference part 110 and the second reference part 120 are coupled with each other via a lens barrel-shaped main body 140 described later so that the first reference line 111 and the second reference line 121 are located on the same plane. When considering, it is preferable that the external shape and size of the second reference portion 120 are the same as the external shape of the first reference portion 110.

  The second reference unit 120 is spaced apart from the first reference unit 110, which means that the reference camera, the first reference unit, and the second reference unit are arranged in front of the reference camera. . At this time, the second reference portion 120 may be integrally formed with the first reference portion 110 by the main body portion 140.

  On the other hand, as can be confirmed in FIG. 10, the second reference portion 120 has a second reference line 121 formed in the horizontal direction at the center, and a plurality of second vertical reference lines orthogonal to the second reference line 121. The plate 122 shown by 123 can be configured to be inserted. Here, the second vertical reference line 123 is formed on the same plane as the first vertical reference line 113 described above, and provides a reference plane serving as a reference for aligning the first vertical lines 20 of the reference camera.

  At this time, the plate 122 is preferably made of a translucent material. This is because a light source unit 150 to be described later is installed behind the plate 122 so that the second reference line 121 can be clearly seen from the viewfinder of the camera. In order to irradiate light from the light source unit 150 toward the camera, it can be said that the plate 122 is preferably made of a material having a certain degree of light transmittance. Acrylic material is suitable for the plate 122 material because of its high light transmission and lightness, but also high strength.

  Meanwhile, the plate 122 may be a mirror, and the second reference line 121 may be formed as a reflection image of the first reference line 111 reflected by the plate 122. At this time, the plate 122 is parallel to the plate 112 of the first reference portion 110 so that the second reference line 121 and the first reference line 111 formed by the reflection image of the first reference line 111 are located on the same plane. Must be placed in. Thereby, the relative depth of the 1st reference line 111 and the 2nd reference line 112 is the same state, and there is an advantage that the separation distance of the 1st reference part 110 and the 2nd reference part 120 can be reduced in half.

A number of second vertical reference lines 123 may also be formed of 113 reflected images with the first vertical reference reflected by the plate 122.
11 and 12 are a front view and a side view showing the shape of the main body shown in FIG.

  The main body 140 serves as a housing that integrally forms the first reference portion 110 and the second reference portion 120 described above. At this time, the main body part 140 must fix the first reference part 110 and the second reference part 120 so that the first reference line 111 and the second reference line 121 are located on the same plane.

  The main body 140 has a barrel shape in which the inside is open and the front / rear is open. The main body 140 has a rectangular outer shape corresponding to the outer shapes of the first reference portion 110 and the second reference portion 120, and the front / rear side so that the first reference portion 110 and the second reference portion 120 are coupled. Bolt holes and coupling grooves can be formed on the open surface of the plate.

  As described above, the first reference portion 110 and the second reference portion 120 are preferably formed with the same outer shape and size, and correspondingly, the first reference line 111 and the second reference line 121 are the same. It is preferably formed so as to have a position, a length, and a thickness.

  If the first reference part 110 and the second reference part 120 are coupled to the main body part 140, the first reference line 111 and the second reference line 121 are naturally placed on the same plane. For this purpose, it is also preferable that the first reference part 110, the second reference part 120, and the main body part 140 are integrally formed.

  Meanwhile, a lower portion of the main body 140 is formed with a coupling bracket 141 for coupling to an alignment portion 130 described later. The coupling bracket 141 may be formed with a hole for coupling.

  As shown in FIG. 4, a light source unit 150 that irradiates light in the camera direction may be installed behind the second reference unit 120. The light source unit 150 serves to illuminate the first reference line 111 and the second reference line 121 from a camera viewfinder or a device that monitors the viewfinder so that the first reference line 111 and the second reference line 121 can be clearly seen.

Configuration where the first reference line 111 and the second reference line 121 are difficult to discriminate in the viewfinder when the shooting location of the stereoscopic video is dark, so that a separate light source is installed so that the optical axes can be aligned regardless of the illumination environment It is. The light source unit 150 may be attached to the rear surface of the main body 140 using a separate coupling member or directly attached to the second reference unit 120.
In addition, the light source unit 150 is preferably composed of various types of LED assemblies such as a ring shape or a planar shape corresponding to the outer shape of the main body 140.
Next, the alignment unit 130 will be described.

The alignment unit 130 moves the first reference unit 110 and the second reference unit 120 forward / backward so that the optical axis of the reference camera is positioned on the same plane formed by the first reference line 111 and the second reference line 121 described above. / Left / Right / Up / Down / Constituent element that imparts motion in the rotation direction. Such an alignment part 130 is formed by laminating a structure for imparting movement in each direction in a multi-stage form, and has a structure in which the uppermost laminated component and the coupling bracket 141 of the main body 140 are coupled.
This will be described in detail with reference to FIG. 3 and FIG.

  The binding port (x) is coupled to the coupling bracket 141 of the main body 140, and the binding port (x) is formed by a dovetail method that is easy to attach and detach. The alignment part 130 couple | bonds with such a binding port (x).

  The alignment unit 130 shown in FIG. 3 is formed by laminating a first gonio stage 131, a second gonio stage 132, a Y stage 133, an elevating unit 134, and a rotating unit 135 in a multi-stage configuration.

  The first gonio stage 131 is installed immediately below the coupling bracket 141 and plays a role of causing the main body 140 to perform an arc motion in the left / right direction (on the ZY plane). The first gonio stage 131 moves along a curved surface, whereby a gradient on the ZY plane formed by the first reference line 111 and the second reference line 121 with respect to the first horizontal line 10 of the reference camera (FIG. 14 to be described later). R1) will be compensated.

  The second gonio stage 132 is installed below the first gonio stage 131 and plays a role of causing the main body 140 to perform an arc motion in the front / rear direction (on the ZX plane). The second gonio stage 132 also moves along the curved surface to compensate for the separation distance (d1 in FIG. 15 described later) between the first reference line 111 and the second reference line 121.

  Although FIG. 3 shows that the first gonio stage 131 is stacked on the second gonio stage 132, the present invention is not limited to this, and the first gonio stage 131 may be used depending on the optical axis alignment environment. There is no problem even if the second gonio stage 132 is stacked on the stage 131.

  The rotating unit 135 is installed under the second gonio stage 132. The rotating unit 135 serves to rotate the main body unit 140 on the XY plane. The rotating unit 135 rotates the main body 140 about the axis center of the main body 140 as a rotation center, thereby separating the predetermined first vertical reference line 113 and the second vertical reference line 123 (d3 in FIG. 23 described later). To compensate.

  The elevating unit 134 is installed below the rotating unit 135. As a result, the elevating unit 134 has a configuration installed between the rotating unit 135 and a Y stage 133 described later, but the present invention is not limited to this, and is formed at various positions according to the optical axis alignment environment. Can be.

  The elevating unit 134 linearly moves the main body unit 140 in the upward / downward direction, thereby separating the first reference line 111 and the second reference line 121 that are horizontally aligned with the first horizontal line 10 of the reference camera (see FIG. 19 described later). Of d2).

  As shown in FIG. 3, the elevating part 134 is connected to a boss part 134 a including a handle part (H) that can be rotated and an upper part of the boss part 134 a to rotate the handle part (H). A lead screw moving part that linearly moves in an upward / downward direction in conjunction with each other is formed.

  The lead screw moving part is a component that linearly moves upward / downward by rotating the handle part (H). The lead screw moving part is connected to the lead screw 134b connected to the handle part (H) and the boss part 134a. The lift frame 134c is slidably coupled in the downward direction, and the movable block 134d is linearly moved in the upward / downward direction by rotating the handle portion (H).

The lead screw 134b is a member having a circular cylinder shape having a hollow inside, and a constant screw thread regularly formed on the outer peripheral edge in the length direction.
The handle portion (H) is formed integrally with the lead screw 134b, and the lead screw 134b is also rotated by a rotation operation of the corresponding handle portion (H).

  As can be confirmed in FIG. 3, the handle portion (H) is installed inside the boss portion 134a so as to be freely rotatable, and a part of the handle portion (H) protrudes from the side surface of the boss portion 134a so that the operator can easily perform the rotation operation. Can be formed. The shape of the handle portion (H) can be changed in whole or in part according to various embodiments, and a crown shape for preventing slipping, and exerting a rotational force using a thumb and an index finger. Can have a polygonal shape (e.g., hexagonal or octagonal) and a wheel shape composed of a rim, a spoke, and a boss. The outer peripheral surface of the handle portion (H) has an embossed surface on one of a moire striped pattern, a lattice pattern, a dot pattern, a vertical striped pattern, and a scratch pattern utilizing other surface roughness. Such a surface treatment provides contact friction to the user and improves the convenience of operation.

  The elevating frame 134c is coupled to the boss portion 134a so as to be able to slide in the upward / downward direction. Corresponding to such an elevating frame 134c, the boss part 134a is formed in an L shape when viewed from the side, and a plurality of rails (not shown) are formed inside the vertical side wall. The elevating frame 134c is formed with a sliding block (not shown) that is slidably coupled with a rail (not shown).

  The moving block 134d is a member that is fixedly installed on the elevating frame 134c and has a screw hole formed on the inside thereof that meshes with a screw thread formed on the lead screw 134b. The moving block 134d moves up / down the lead screw 134c that rotates in the same direction in conjunction with the forward / reverse rotation of the handle portion (H) due to the meshing relationship between the screw screw and the screw hole corresponding to the lead screw 134c. Move down.

  When the lead screw 134c is moved in the up / down direction, the elevating frame 134c moves in conjunction with the boss portion 134a in the up / down direction, thereby moving the main body portion 140 in the up / down direction. Can be made.

  As described above, the elevating unit 134 of the embodiment has been described in detail. However, the present invention is not limited to this, and the elevating unit 134 of FIG. 3 is an instrumental means for moving the main body 140 upward / downward. However, this is merely an embodiment, and various modifications are possible.

  On the other hand, the Y stage 133 is installed under the elevating unit 134 and performs a role of moving the main body unit 140 linearly in the left / right direction (on the ZY plane). The Y stage 133 is meant as a means of moving a relatively very light embodiment in the left / right direction (on the ZY plane) without having to move a heavy reference camera rig for optical axis alignment. Therefore, the separation distance (d4 in FIG. 24 described later) between the first vertical reference line 113 and the second vertical reference line 123 that are vertically aligned with the first vertical line 20 of the reference camera is compensated.

The embodiment described in detail above is used by being placed in front of the left / right eye camera, and for ease of movement, moving means including a support base can be combined, It may be formed by connecting with a rig of the right eye camera in a predetermined instrumental form.
Next, the alignment driving unit 200 will be described in detail.

  The alignment driving unit 200 is coupled to the above-described alignment unit 130 so as to be able to transmit power, and is responsible for providing a driving force for moving the alignment unit 130. Such an alignment driving unit 200 is a large reference that provides a driving force for moving the main body 140, to which the first reference unit 110 and the second reference unit 120 are fixed, in the vertical direction, the horizontal direction, the front-rear direction, or the rotation direction. The left / right gradient alignment driving unit 210, the front / rear gradient alignment driving unit 220, the upper / lower alignment driving unit 230, the left / right alignment driving unit 240, and the rotation driving unit 250 can be divided.

The alignment driving unit 200 includes a motor, a motor control unit that controls the motor, and a unit that includes a power transmission unit that transmits the rotational force of the motor to the driving force of the alignment unit 130.
FIG. 13 is a configuration diagram illustrating an alignment driving unit of an embodiment of an optical axis alignment device for stereoscopic video photography according to the present invention.

  As shown in FIG. 13, the left-right gradient alignment driving unit 210 is coupled to the first gonio stage 131. The left-right gradient alignment driving unit 210 provides a driving force that causes the main body unit 140 to arc left / right. Although not shown in the drawing, a motor and predetermined power transmission means are formed in the left and right gradient alignment driving unit 210 so that the rotational force of the motor causes the left and right arc motion of the upper plate of the first gonio stage 131. . At this time, the power transmission means can be configured by combining a gear or a belt-pulley.

  The second gonio stage 132 is coupled with the above-described longitudinal gradient alignment driving unit 220. The front / rear gradient alignment driving unit 220 provides a driving force that causes the main body unit 140 to arc forward / backward. Although not shown in the drawing, a motor and predetermined power transmission means are also formed in the longitudinal gradient alignment driving unit 220 so that the rotational force of the motor causes the longitudinal arc motion of the upper plate of the second gonio stage 132. . Further, the power transmission means can be configured by combining gears or belt-pulleys.

  A rotation driving unit 250 is coupled to the rotation unit 135. The rotation driving unit 250 provides a driving force for rotating the main body 140 around the axis center of the main body 140 on the XY plane. A rotation shaft is formed inside the rotation drive unit 250, and a motor and power transmission means for rotating the rotation shaft directly or indirectly are provided. A gear assembly may be provided for transmitting the driving force of the motor to the rotating shaft by the power transmission means.

  An upper / lower alignment driving unit 230 is coupled to the elevating unit 134. The up / down alignment driving unit 230 provides a driving force for moving the main body unit 140 up / down. A motor can be installed instead of the handle portion (H) for rotating the lead screw 134b, and a predetermined power transmission means is formed so that the rotational force of the motor is converted into the rotational force of the lead screw 134b. be able to.

  A left and right alignment driving unit 240 is coupled to the Y stage 133. The left-right alignment driving unit 240 provides a driving force that causes the main body unit 140 to linearly move left and right. A motor and power transmission means can be formed inside the Y stage 133 so that the rotational force of the motor is converted into a left and right linear motion on the top of the Y stage 133. At this time, the power transmission means is coupled to the motor. A pinion and a rack gear can be combined.

  Each power transmission means of the alignment driving unit 200 exemplified above is an exemplary matter presented to help understanding of the present invention, and the present invention is not limited thereto. Further, the coupling relationship between the motor and the exemplified power transmission means and the specific coupling relationship between the alignment unit 130 and the exemplified power transmission means correspond to the main technique, and detailed description thereof will be omitted.

A motor control unit provided in each of the alignment driving units 210, 220, 230, and 240 receives a horizontal alignment driving signal or a vertical alignment driving signal, which will be described later, and controls a rotation angle, a rotation speed, and the like of the motor. The alignment driving units 210, 220, 230, and 240 may be configured to be manually adjusted by a user using an operation device having a separate user driving interface such as a remote controller.
Next, the alignment control unit 300 will be described.

  The alignment controller 300 controls the alignment driver 200 to horizontally align the first horizontal line 10 of the reference camera, and the first reference line 111 and the second reference line 121, and the second vertical line 20 of the reference camera. In order to vertically align the first vertical reference line 113 and the second vertical reference line 123, it is responsible for controlling the alignment driver 200. In addition, the alignment controller 300 uses the first reference line 111 and the second reference line 121, the first vertical reference line 113, and the second vertical reference line 123 as references after the horizontal and vertical alignment of the reference cameras is completed. In order to perform horizontal and vertical alignment with respect to the optical axis of the other camera, it is responsible for controlling the rig control unit of the rig that gives the movement of the other camera.

That is, the alignment control unit 300 generates a horizontal alignment driving signal and a vertical alignment driving signal and transmits them to the alignment driving unit 200, and generates a horizontal alignment rig driving signal and a vertical alignment rig driving signal to control the rig of the camera. The function to be transmitted to the part is executed.
FIG. 14 is a view showing a state of the viewfinder of the camera showing the first horizontal line, the first reference line, and the second reference line before horizontal alignment.

  Here, the horizontal alignment drive signal means that the first reference line 111 and the second reference line 121 that are inclined to the first horizontal line 10 of the reference camera are horizontal to the first horizontal line 10 as shown in FIG. It is a drive control signal of the alignment drive part 200 for moving the 1st reference | standard part 110 and the 2nd reference | standard part 120 so that it may align. Specifically, the horizontal alignment driving signal is transmitted to the left / right gradient alignment driving unit 210, the front / rear gradient alignment driving unit 220, and the upper / lower alignment driving unit 230 of FIG. 14B, and the first gonio stage 131 and the second The gonio stage 132 and the elevating part 134 are instructed to move.

  In order to generate such a horizontal alignment driving signal, the alignment controller 300 receives image data of the first reference line 111 and the second reference line 121 through the lens of the reference camera. As shown in FIG. 14A, the input image data is displayed together on the monitor screen showing the viewfinder or viewfinder of the reference camera on which the first horizontal line 10 and the first vertical line 20 are displayed. The

  At this time, the alignment error between the first horizontal line 10, the first reference line 111, and the second reference line 121 is the gradient (R1), the separation distance (d1) between the first reference line 111 and the second reference line 121, and the horizontal alignment. The first reference line 111 and the second reference line 121 are separated from the first horizontal line 10 (d2 in FIG. 19 described later).

  The gradient (R1) indicates the degree to which the first reference unit 110 and the second reference unit 120 are tilted to the left and right with respect to the reference camera, and the image of the first reference line 111 and the second reference line 121 The images of the first horizontal line 10 are extracted by comparison. In order to compensate for the gradient (R1), the alignment controller 300 generates a horizontal alignment drive signal that causes the first gonio stage 131 to move in a horizontal direction and transmits the horizontal alignment drive signal to the left-right gradient alignment driver 210.

  FIG. 15 is a diagram showing a camera viewfinder showing the first reference line and the second reference line whose gradient is compensated in the state of FIG. 14, and FIG. 16 is a diagram of the gradient in the state of FIG. It is a figure which shows the mode of the viewfinder of the camera which showed the further another state of the 1st reference line and 2nd reference line which were compensated for.

  As can be seen in FIG. 15A, when the first gonio stage 131 moves left and right and the gradient (R) is compensated, the first horizontal line 10 and the first reference line 111 of the reference camera (A) are compensated. And the 2nd reference line 121 will be in a parallel state. However, as can be seen in FIG. 15B, when the first reference line 111 and the second reference line 121 are based on the front-rear direction with respect to the first horizontal line 10, they are inclined counterclockwise, There is a separation distance such as d1 in (a). As shown in FIG. 16 (b), the situation described above is inclined clockwise when the first reference line 111 and the second reference line 121 are based on the front-rear direction, and FIG. It can also be shown in another state where there is a separation distance such as d1.

  The separation distance (d1) between the first reference line 111 and the second reference line 121 is such that the first reference part 110 and the second reference part 120 are front and rear with respect to the optical axis (OA1) of the reference camera (A). The images of the first reference line 111 and the second reference line 121 are compared and extracted through the alignment control unit 300. In order to compensate for the separation distance (d1), the alignment controller 300 generates a horizontal alignment driving signal that causes the second gonio stage 132 to arc back and forth and transmits the horizontal alignment driving signal to the front-to-back gradient alignment driving unit 220.

  FIGS. 17 and 18 are views showing the viewfinder of the camera showing the distance between the first reference line and the second reference line according to the driving direction of the front / rear gradient alignment driving unit.

In the state shown in FIG. 15, when the longitudinal gradient alignment driving unit 220 drives the second goniostage 132 in the counterclockwise direction as shown in FIG. 17B, as shown in FIG. It can be confirmed that the isolation distance (d1) increases. On the other hand, as shown in FIG. 18 (b), it can be confirmed that if driven clockwise, the isolation distance (d1) is reduced and compensated as shown in FIG. 18 (a). it can. Accordingly, the longitudinal gradient alignment driving unit 220 receives the horizontal alignment driving signal from the alignment control unit 300 and drives the second gonio stage 132 clockwise as shown in FIG. 18 to compensate for the separation distance (d1). Operates as follows.
FIG. 19 is a view showing a state of the viewfinder of the camera showing a state in which the first reference line and the second reference line are aligned in the state of FIG. 15 or FIG. 16.

  If the separation distance (d1) between the first reference line 111 and the second reference line 121 is compensated, the first reference line 111 and the second reference line 121 are displayed in a straight line as shown in FIG. Further, the separation distance between the horizontally aligned first reference line 111 and second reference line 121 and the first horizontal line 10 of the reference camera (A) is shown as d2 in FIG.

  Such a separation distance (d2) indicates that the first reference unit 110 and the second reference unit 120 have an error in the up / down direction with respect to the optical axis (OA1) of the reference camera (A). The images of the first reference line 111 and the second reference line 121 that are horizontally aligned and the image of the first horizontal line 10 of the reference camera (A) are compared and extracted through the alignment controller 300. In order to compensate for the separation distance (d2), the alignment control unit 300 generates a horizontal alignment driving signal for linearly moving the elevating unit 134 up / down and transmits the horizontal alignment driving signal to the up / down alignment driving unit 230.

  FIG. 20 is a view showing a state of the viewfinder of the camera showing a state in which the first horizontal line, the first reference line, and the second reference line are horizontally aligned in the state of FIG.

If the distance (d2) between the horizontally aligned first reference line 111 and second reference line 121 and the first horizontal line 10 of the reference camera (A) is compensated, as shown in FIG. 20, the first reference line 111 is obtained. The second reference line 121 and the first horizontal line 10 are displayed in a straight line. This state means that the optical axis (OA1) of the reference camera (A) is horizontally aligned with the first reference line 111 and the second reference line 121, as can be confirmed in FIG. To do. Thereafter, if the optical axes of the other cameras (B) are aligned with the first reference line 111 and the second reference line 121 that are horizontally aligned in this way, the light of the left / right eye camera (A, B) for stereoscopic video shooting is obtained. The axes are horizontally aligned, which basically prevents the vertical errors described above in the background art from occurring.
On the other hand, the state where the optical axes are horizontally aligned will be briefly described in detail with reference to FIGS.

  FIG. 21 is a conceptual diagram for explaining a state in which optical axes are aligned through an embodiment of an optical axis aligning device for stereoscopic video photography according to the present invention in a parallel axis camera array system, and FIG. FIG. 2 is a conceptual diagram for explaining a state in which optical axes are aligned through an embodiment of an optical axis aligning device for stereoscopic video photography according to the present invention in a camera array system.

  As shown in FIG. 21, in the parallel axis camera arrangement method, the left / right eye cameras (A, B) are arranged in the horizontal direction (ZY plane reference), so that it can be seen as one camera when viewed from the side. I will.

  If the optical axis alignment process of the reference camera (A) is executed and the optical axis alignment process of the other camera (B) is executed using this as a reference, the plane formed by the two optical axes (OA1, OA2) and the first The plane formed by the reference line 111 and the second reference line 121 is in the same state. Unlike when using a sine board, it can be confirmed that no vertical error occurs at any position on the path of the two optical axes (OA1, OA2).

  As shown in FIG. 22, even in the orthogonal camera arrangement method, the plane formed by the two optical axes (OA1, OA2) and the plane formed by the first reference line 111 and the second reference line 121 are in the same state, and a vertical error occurs. You can confirm that you do not.

The specific alignment process of the reference camera (A) and the other camera (B) will be dealt with in detail in the alignment moving unit 200 and the alignment control unit 300, which will be described later, or in the description part of the alignment method.
FIG. 23 is a view showing a viewfinder of the camera showing the first vertical line, the first vertical reference line, and the second vertical reference line before vertical alignment.

  On the other hand, in the vertical alignment drive signal, as shown in FIG. 23A, the first vertical line 20, the first vertical reference line 113, and the second vertical reference line 123 of the separated reference cameras are vertically aligned. As described above, the driving control signal of the alignment driving unit 200 for moving the first reference unit 110 and the second reference unit 120. Specifically, the vertical alignment driving signal is transmitted to the rotation driving unit 250 in FIG. 23B and the left and right alignment driving unit 240 in FIG. 23B so that the rotation unit 135 and the Y stage 133 move. Command.

  In order to generate such a vertical alignment driving signal, the alignment controller 300 passes through a lens of the reference camera and forms a plurality of first vertical reference lines 113 and second reference lines that are formed to be orthogonal to the first reference line 111. The image data of a plurality of second vertical reference lines 123 formed to be orthogonal to the line 121 is received. As shown in FIG. 23A, the input image data is displayed together with the viewfinder of the reference camera on which the first vertical line 20 is displayed or the monitor screen showing the viewfinder.

  At this time, the alignment error between the first vertical line 20, the first vertical reference line 113, and the second vertical reference line 123 is the separation distance (d3) between the predetermined first vertical reference line 113 and the second vertical reference line 123. The predetermined vertical reference line 113 and the second vertical reference line 123 that are vertically aligned and a separation distance between the first vertical line 20 and the first vertical line 20 (d4 in FIG. 24 described later).

  Here, the predetermined first vertical reference line 113 means the first vertical reference line 113 that is closest to the first vertical line 20 among the many first vertical reference lines 113, and is a predetermined second vertical reference line. 123 denotes the second vertical reference line 123 that is closest to the first vertical line 20 among the many second vertical reference lines 123.

The separation distance (d3) indicates the degree to which the first reference portion 110 and the second reference portion 120 are twisted on the XY plane with respect to the optical axis (OA1) of the reference camera (A). The images of the first vertical reference line 113 and the second vertical reference line 123 are compared and extracted through the alignment controller 300. In order to compensate for the separation distance (d3), as shown in FIG. 23B, the alignment control unit 300 performs vertical alignment so as to rotate the rotating unit 135 counterclockwise or clockwise on the XY plane. A drive signal is generated and transmitted to the rotation drive unit 250.
FIG. 24 is a diagram showing a state of the viewfinder of the camera displaying the first vertical reference line and the second vertical reference line horizontally aligned in the state of FIG.

  As shown in FIG. 24, in the state of FIG. 23, if the rotating unit 135 is rotated counterclockwise on the XY plane in order to compensate for the separation distance (d3), the first vertical reference line 113 and the first Two vertical reference lines 123 are displayed in a straight line. Further, the distance between the vertically aligned first vertical reference line 113 and second vertical reference line 123 and the first vertical line 20 of the reference camera (A) is shown as d4 in FIG.

  Such an isolation distance (d4) indicates that the first reference unit 110 and the second reference unit 120 have an error on the left and right with respect to the optical axis (OA1) of the reference camera (A). The aligned first vertical reference line 113 and second vertical reference line 123 and the image of the first vertical line 20 of the reference camera (A) are compared and extracted through the alignment controller 300. In order to compensate for the separation distance (d4), the alignment controller 300 generates a vertical alignment driving signal for linearly moving the Y stage 133 to the left and right and transmits the vertical alignment driving signal to the left and right alignment driver 240.

  FIG. 25 is a view showing the state of the viewfinder of the camera showing that the first horizontal line and the first reference line and the second reference line are vertically aligned in the state of FIG.

  24, if the Y stage 133 moves the first reference part 110 and the second reference part 120 in the left direction (reference to (b) of FIG. 23) and the separation distance (d4) is compensated, FIG. , The first vertical reference line 113, the second vertical reference line 123, and the first vertical line 20 are displayed in a straight line. Such a state means that the optical axis (OA1) of the reference camera (A) is vertically aligned with the first vertical reference line 113 and the second vertical reference line 123.

  As described above, when the horizontal alignment and the vertical alignment of the reference camera (A) and the first reference unit 110 and the second reference unit 120 are finished, the optical axis of the reference camera (A) for shooting a stereoscopic image ( OA1) The alignment ends. Thereafter, a process of aligning the optical axis (OA2) of another camera (B) with the optical axis (OA1) of the aligned reference camera (A) as a reference is executed.

  In this connection, the horizontal alignment rig drive signal and the vertical alignment rig drive signal described above refer to the optical axis (OA2) of another camera (B) with the optical axis (OA1) of the aligned reference camera (A) as a reference. This is a control signal that the alignment control unit 300 transmits to the rig control unit of another camera (B) in order to align.

  First, the horizontal alignment rig drive signal includes the first reference line 111 and the first reference line 121 horizontally aligned with the optical axis (OA1) of the reference camera (A), and the optical axis (OA2) of the other camera (B). This is a drive control signal for moving the rig of the other camera (B) so that the second horizontal line 30 passing through is horizontally aligned.

  FIG. 26 is a view showing a state of the camera viewfinder showing the second horizontal line of the other camera before horizontal alignment and the first reference line and the second reference line aligned horizontally with the optical axis of one camera. .

  Specifically, the horizontal alignment rig drive signal is a rig control unit that controls a rig that moves other cameras (B) in the front / rear / left / right / up / down / rotation directions (FIG. 13). The rig is controlled so that the second horizontal line 30, the first reference line 111, and the second reference line 121 of the other camera (B) are horizontally aligned.

  In order to generate such a horizontal alignment rig driving signal, the alignment control unit 300 receives image data of the first reference line 111 and the second reference line 121 through lenses of other cameras. At this time, the first reference line 111 and the second reference line 121 are horizontally aligned with the optical axis (OA1) of the reference camera (A). As shown in FIG. 26, the input image data is displayed together on a viewfinder of another camera on which the second horizontal line 30 and the second vertical line 40 are displayed or a monitor screen showing the viewfinder.

  At this time, the alignment error between the second horizontal line 30, the first reference line 111, and the second reference line 121 is the gradient (R2), the separation distance (d5) between the first reference line 111 and the second reference line 121, and the horizontal alignment. The first reference line 111 and the second reference line 121 are separated from the second horizontal line 30 (d6 in FIG. 28 described later).

  The gradient (R2) indicates the degree to which the second horizontal line 30 is tilted left and right in the first reference unit 110 and the second reference unit 120 that are horizontally aligned with respect to the reference camera. The image of the second reference line 121 and the image of the second horizontal line 30 are compared and extracted. In order to compensate for this gradient (R2), the alignment control unit 300 generates a horizontal alignment rig drive signal so that the rigs of the other cameras arc to the left and right, and transmits them to the rig control unit (C). It becomes like this.

The rigs of other cameras, like the alignment unit 130 described above, include a goniometer stage, an X and Y stage, an elevator, a rotation device, and a motor for driving these, which move left and right and back and forth. The drive unit may be formed.
Since the rig movement of other cameras can be realized in the same manner as the movement of the alignment unit 130 described above, detailed description thereof will be omitted.
FIG. 27 is a view showing a state of the viewfinder of the camera showing the first reference line and the second reference line whose gradient is compensated in the state of FIG.

If the gradient (R2) is compensated by the movement of the rig, the second horizontal line 30, the first reference line 111, and the second reference line 121 are in parallel, as can be confirmed in FIG. However, when the first reference line 111 and the second reference line 121 are inclined with respect to the second horizontal line 30 with respect to the front-rear direction, there is a separation distance as indicated by d5 in FIG. In such a situation, the separation distance (d5) between the first reference line 111 and the second reference line 121 is such that the first reference unit 110 and the first reference line 110 and the second reference line 121 are separated from the optical axis (OA2) of the other camera (B). 2 shows the degree to which the reference unit 120 is tilted back and forth, and the images of the first reference line 111 and the second reference line 121 are compared and extracted through the alignment control unit 300. In order to compensate for the separation distance (d5), the alignment control unit 300 generates a horizontal alignment rig driving signal so as to arc forward and backward the rigs of the other cameras and transmits them to the rig control unit (C). It becomes like this.
FIG. 28 is a view showing a viewfinder of the camera showing a state in which the first reference line and the second reference line are aligned in the state of FIG.

  If the separation distance (d5) between the first reference line 111 and the second reference line 121 is compensated, the first reference line 111 and the second reference line 121 are displayed in a straight line as shown in FIG. Further, the separation distance between the first reference line 111 and the second reference line 121 that are horizontally aligned and the second horizontal line 30 of another camera (B) is shown as d6 in FIG.

  The separation distance (d6) is such that the first reference unit 110 and the second reference unit 120, which are horizontally aligned with the optical axis (OA1) of the reference camera (A), are optical axes of the other cameras (B). This shows that there is an error in the up / down direction with respect to (OA2), and the images of the first reference line 111 and the second reference line 121 horizontally aligned and the second horizontal line 30 of the reference camera (B) are shown. In comparison, it is extracted through the alignment control unit 300. In order to compensate for the separation distance (d6), the alignment control unit 300 generates a horizontal alignment rig driving signal for linearly moving the other camera (B) up / down on the rig (rig) to generate a rig control unit (C ) Will be sent to.

  FIG. 29 is a view showing the state of the viewfinder of the camera showing the state in which the second horizontal line, the first reference line, and the second reference line are horizontally aligned in the state of FIG.

  If the separation distance (d6) is compensated, as shown in FIG. 29, the first reference line 111, the second reference line 121, and the second horizontal line 30 are displayed in a straight line. This state is a state in which the optical axis (OA1) of the reference camera (A) and the optical axis (OA2) of the other camera (B) are horizontally aligned using the first reference line 111 and the second reference line 121 as a medium. It means that.

  FIG. 30A is a view showing a state of the viewfinder of the camera showing the second vertical line, the first vertical reference line, and the second vertical reference line before vertical alignment. FIG. 30B is a diagram for explaining the alignment error between the first vertical reference line and the second vertical reference line and the other camera in the parallel-axis camera arrangement method. In particular, in the case of FIG. 30B, in order to help understanding, a top view (top view) of the camera (A <B) and a front view of the first reference unit 110 and the second reference unit 120 are combined. It is.

  The vertical alignment rig drive signal passes through a predetermined first vertical reference line (113b in FIG. 30), a second vertical reference line (123b in FIG. 30), and the optical axis (OA2) of another camera (B). This is a drive control signal for moving the rig of the other camera (B) so that the second vertical line 40 is vertically aligned.

  At this time, as shown in FIG. 30B, in the parallel-axis camera arrangement method, the predetermined first vertical reference line 113b and the second vertical reference line 123b are the optical axis (OA1) of the reference camera (A). Means a vertical reference line that is separated from the first vertical reference line (113a in FIG. 30) and the second vertical reference line (123a in FIG. 30) by a predetermined distance (D3). The distance (D3) corresponds to the distance (D1) between the reference camera (A) and the other camera (B) on the rig. In one embodiment, when the distance between the first vertical reference line or the second vertical reference line is 50 mm, the distance (D3) is 200 mm, and the other camera (B1) has a separation distance (D1) of 200 mm. ) Must be moved to the left and right (reference (b) in FIG. 30) on the rig.

  In the case of the interval (D3), it can be changed according to the shooting environment, and the other camera (B) is moved from the rig (rig) to the left and right by the changed interval (D3). Accordingly, the sizes of the first reference part 110 and the second reference part 120 may be formed to correspond to the width of the rig.

  After horizontally / vertically aligning the optical axis (OA2) of the other camera (B) with the first vertical reference line 113 and the second vertical reference line 123 that minimize the distance (D3), the distance (D3) is maximized. Thus, it is possible to test whether or not there is an error in the rig itself by moving the other camera (B) and checking the horizontal / vertical alignment state. Thereby, in developing a 3D video rig using one embodiment, it can be utilized as a standard means for providing a reference.

  In order to generate the vertical alignment rig driving signal, the alignment controller 300 receives image data of the first vertical reference line 113a and the second vertical reference line 123a through the lens of another camera. At this time, the first vertical reference line 113a and the second vertical reference line 123a are in a state of being vertically aligned with the optical axis (OA1) of the reference camera (A). As shown in FIG. 30A, the input image data is displayed on the monitor screen showing the viewfinder or viewfinder of another camera on which the second horizontal line 30 and the second vertical line 40 are displayed. Is done.

  The alignment control unit 300 feeds back the vertical alignment rig drive signal and transmits it to the rig control unit (C) until it is aligned with the second vertical line 40, the first vertical reference line 113a, and the second vertical reference line 123a. . Due to the vertical alignment rig drive signal transmitted in feedback, the rig moves the other camera (B) to the left simultaneously with rotating the other camera (B) clockwise as in FIG. 30 (b). The first vertical reference line 113b and the second vertical reference line 123b are vertically aligned with the second horizontal line 40.

  FIG. 31A is a view showing a viewfinder of the camera showing the second vertical line, the first vertical reference line, and the second vertical reference line after vertical alignment. FIG. 31B is a diagram for explaining the vertical alignment of the first vertical reference line and the second vertical reference line with respect to the optical axis of the other camera in the parallel axis camera arrangement system.

  When the vertical alignment with respect to the optical axis (OA2) of the other camera (B) is completed, the second horizontal line 40, the first vertical reference line 113b, and the second vertical line are obtained as shown in FIG. The reference line 123b is displayed in a straight line. In such a state, the optical axis (OA1) of the reference camera (A) and the optical axis (OA2) of another camera (B) are vertically aligned through the first vertical reference line 113b and the second vertical reference line 123b. It means that it is in the state.

  As described above, if the optical axis (OA1) of the reference camera (A) and the optical axis (OA2) of another camera are aligned horizontally and vertically, the left-eye camera can be easily obtained while basically preventing the above-described vertical error. And the optical axis of the right-eye camera can be aligned, and an environment for shooting high-quality stereoscopic images can be provided.

Hereinafter, a preferred embodiment of an alignment method for vertically / horizontally aligning the optical axes of the left-eye camera and the right-eye camera using one embodiment having the above-described configuration will be described in detail.
FIG. 32 is a flowchart for explaining the optical axis alignment method for stereoscopic video shooting according to the present invention.

S100
As shown in FIG. 32, in this step (S100), first, the first reference line 111, the second reference line 121, and the first reference line 111 are passed through a reference camera that is a reference among the left-eye camera and the right-eye camera. The image data of at least one first vertical reference line 113 and second vertical reference line 123 that are orthogonal to the second reference line 121 is received.

S200
Thereafter, in this step (S200), based on the input image data of the first reference line 111 and the second reference line 121, the first horizontal line 10 passing through the optical axis (OA1) of the reference camera, and the first reference line. Alignment of the line 111 and the second reference line 121 is performed.

  FIG. 33 is a flowchart for explaining the process of manually performing horizontal alignment in step S200 shown in FIG. 32. FIG. 34 is a flowchart for automatically performing horizontal alignment in step S200 shown in FIG. It is the flowchart shown in order to demonstrate the process to perform.

  When the user manually performs horizontal alignment while looking at the viewfinder or monitor of the reference camera, first, the first reference line 111 and the second reference line 121 are displayed on the screen of the first horizontal line 10 as shown in FIG. (S210A). Thereafter, the user drives the alignment unit 130 so that the displayed first horizontal line 10, the first reference line 111, and the second reference line 121 are horizontally aligned (S220A).

  When performing horizontal alignment automatically, as shown in FIG. 34, first, the gradient (R) formed by the first horizontal line 10 and the first reference line 111 or the second reference line 121, and the first reference line 111 and the first reference line The separation distance (d1) of the two reference lines 121 is extracted (S210B). Thereafter, the alignment unit 130 is driven so that the gradient (R) is compensated, the separation distance (d1) is compensated, and the first reference line 111 and the second reference line 121 are horizontally aligned (S220B).

  Next, a separation distance (d2) between the first reference line 111 and the second reference line 121 that are horizontally aligned and the first horizontal line 10 is extracted (S230B). The extracted separation distance (d2) is compensated, and the alignment unit 130 is driven so that the first horizontal line 10 and the first reference line 111 and the second reference line 121 that are horizontally aligned are horizontally aligned (S240B).

S300
In this step (S300), based on the inputted at least one first vertical reference line 113 and second vertical reference line 123, the first vertical line 20 passing through the optical axis (OA1) of the reference camera, Alignment of the first vertical reference line 113 and the second vertical reference line 123 is performed.

  FIG. 35 is a flowchart for explaining a process of manually performing vertical alignment in step S300 shown in FIG. 32, and FIG. 36 is an automatic vertical alignment in step S300 shown in FIG. It is the flowchart shown in order to demonstrate the process to perform.

  When the user manually performs vertical alignment while looking at the viewfinder or monitor of the reference camera, first, the first vertical reference line 113 and the second vertical reference line are displayed on the screen of the first vertical line 20 as shown in FIG. 123 is displayed (S310A). Thereafter, the user drives the alignment unit 130 so that the displayed first vertical line 20, the first vertical reference line 113, and the second vertical reference line 123 are vertically aligned (S320A).

  When the horizontal alignment is automatically executed, as shown in FIG. 36, first, the separation distance (d3) between the first vertical reference line 113 and the second vertical reference line 123 is extracted (S310B). The extracted separation distance (d3) is compensated, and the alignment unit 130 is driven so that the first vertical reference line 113 and the second vertical reference line 123 are vertically aligned (S320B). Next, a separation distance (d4) between the first vertical reference line 113 and the second vertical reference line 123 that are vertically aligned and the first vertical line 20 is extracted (S330B). Next, the extracted separation distance (d4) is compensated, and the alignment unit 130 is driven so that the first vertical line 20 and the vertically aligned first vertical reference line 113 and second vertical reference line 123 are vertically aligned (S340B). ).

S400
In this step (S400), the first reference line 111 and the second reference line 121 aligned in step S200 and the at least one first vertical reference line 113 and second vertical reference line aligned in step S300 are passed through another camera. 123 image data is received.

S500
In this step (S500), the second horizontal line 30 passing through the optical axis (OA2) of the other camera is input based on the image data of the first reference line 111 and the second reference line 121 input in step S400. The first reference line 111 and the second reference line 121 are aligned.

  FIG. 37 is a flowchart for explaining a process of manually performing vertical alignment in step S500 shown in FIG. 32, and FIG. 38 is an automatic vertical adjustment in step S500 shown in FIG. It is the flowchart shown in order to demonstrate the process of performing a row | line | column.

  When the user manually performs horizontal alignment while looking at the viewfinder or monitor of another camera, as shown in FIG. 37, the first reference line 111 and the second reference line 121 that are horizontally aligned on the screen of the second horizontal line 30 are displayed. Is displayed (S510A). Thereafter, the rig of another camera is driven so that the displayed second horizontal line 30, the first reference line 111, and the second reference line 121 are horizontally aligned (S520A).

  When the horizontal alignment is automatically performed, as shown in FIG. 38, the gradient (R2) formed by the second horizontal line 30, the first reference line 1110 or the second reference line 121, the first reference line 111, and the second reference line. The separation distance (d5) of the line 121 is extracted (S510B). Thereafter, the slope (R2) is compensated, the separation distance (d5) is compensated, and the rigs (rigs) of the other cameras are arranged so that the first reference line 111 and the second reference line 121 are horizontally aligned on the viewfinder of the other cameras. ) Is driven (S520B). Next, the separation distance (d6) between the first reference line 111 and the second reference line 121 that are horizontally aligned and the second horizontal line 30 is extracted (S530B). Next, the extracted separation distance (d6) is compensated, and the rigs of the other cameras are driven so that the second horizontal line 30 and the first and second reference lines 111 and 121 that are horizontally aligned are horizontally aligned. (S540B).

S600
In this step (S600), based on the image data of the first vertical reference line 113 and the second vertical reference line 123 input in step S400, the second vertical line 40 passing through the optical axis (OA2) of the other camera, , Alignment of the input first vertical reference line 113 and second vertical reference line 123 is executed.
FIG. 39 is a flowchart for explaining the process of manually performing vertical alignment in step S600 shown in FIG.

  When the user manually performs vertical alignment while looking at the viewfinder or monitor of another camera, as shown in FIG. 39, the screen is displayed on the screen of the second vertical line 40 and the predetermined first vertical reference line 113 inputted. The second vertical reference line 123 is displayed (S610). Thereafter, the rigs of other cameras are driven so that the displayed first vertical reference line 113 and second vertical reference line 123 are vertically aligned with the second vertical line 40 (S620).

When performing the vertical alignment automatically, as described above, the rigs of other cameras are adjusted so that the second vertical line 40, the first vertical reference line 113, and the second vertical reference line 123 are vertically aligned. Feedback control.
The preferred embodiments related to the optical axis alignment apparatus for stereoscopic video photography according to the present invention have been described above.

  It should be understood that the above-described embodiments are merely illustrative in all aspects and not limiting. The scope of the present invention is defined by the following claims rather than the detailed description given above, and all modifications or variations derived from the meaning and scope of the claims and the equivalent concept thereof. Should be construed as being included within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 ... 1st horizontal line 20 ... 1st vertical line 30 ... 2nd horizontal line 40 ... 2nd vertical line 110 ... 1st reference | standard part 111 ... 1st reference line 112 ... Plate 113 ... 1st vertical reference line 114 ... Wire rod fixing part 120 ... 2nd reference part 121 ... 2nd reference line 122 ... Plate 123 ... 2nd vertical reference line 130 ... Alignment part 131 ... 1st gonio stage 132 ... 2nd gonio stage 133 ... Y stage 134 ... Elevating part 134a ... Boss part 134b ... Lead screw 134c ... Elevating frame 134d・ ・ ・ Moving block 135 ・ ・ ・ Rotating part 140 ・ ・ ・ Main body part 141 ・ ・ ・ Coupling bracket 200 ・ ・ ・ Alignment drive part 210 ・ ・ ・ Left and right gradient alignment drive part 220 ・ ・ ・ Front and back Gradient Alignment Drive Unit 230 ・ ・ ・ Up / Down Alignment Drive Unit 240 ・ ・ ・ Left / Right Alignment Drive Unit 250 ・ ・ ・ Rotation Drive Unit 300 ・ ・ ・ Alignment Control Unit

Claims (43)

A first reference line formed with a first reference line so as to be seen through;
A second reference part formed to be spaced apart from the first reference part and located on the same plane as the first reference line; and the first reference part and the second reference part; The first reference unit and the second reference unit are coupled so that the optical axis of one of the left-eye camera and the right-eye camera is located on the same plane formed by the first reference line and the second reference line. An optical axis aligning device for image capturing, comprising: an aligning unit that imparts movement of a reference unit. The first reference portion has an open frame shape,
2. The optical axis alignment device for video shooting according to claim 1, wherein the first reference line is formed of a wire rod that connects one side and the other side of the opened frame. The first reference portion has an open frame shape,
2. The optical axis alignment device for image capturing according to claim 1, wherein the first reference line is formed of a plate that is coupled to the open frame and has light transmittance.   The optical axis alignment device for image capturing according to claim 3, wherein at least one first vertical reference line orthogonal to the first reference line is formed on the plate. The second reference portion has an open frame shape,
The apparatus for aligning optical axes for image capturing according to claim 1, wherein the second reference line is formed of a plate coupled to the open frame.   The optical axis alignment device for image capturing according to claim 5, wherein at least one second vertical reference line orthogonal to the second reference line is formed on the plate.   6. The optical axis alignment apparatus for video shooting according to claim 5, wherein the plate is made of a translucent material.   2. The optical axis alignment device for video shooting according to claim 1, further comprising a light source unit disposed behind the second reference unit and irradiating light in the direction of the first reference unit.   9. The optical axis alignment device for video shooting according to claim 8, wherein the light source unit is formed of an LED.   2. The optical axis alignment device for image capturing according to claim 1, further comprising a main body unit that integrally couples the first reference unit and the second reference unit and couples with the alignment unit. The alignment portion is
Installed in multiple stages below the first reference part and the second reference part,
A left and right gonio stage that arc-moves the first reference portion and the second reference portion in a left / right direction;
A front-rear gonio stage that arcs the first reference part and the second reference part in a forward / backward direction; and a left-right stage that linearly moves the first reference part and the second reference part in the left / right direction; The optical axis alignment device for video shooting according to claim 1, characterized in that it is characterized in that:   The optical axis alignment device for image capturing according to claim 11, further comprising an elevating unit that moves the first reference unit and the second reference unit upward / downward.   13. The optical axis alignment device for video shooting according to claim 12, wherein the elevating unit is installed between the upper / lower gonio stage and the left and right stages. The elevating part is
A boss part including a handle part capable of rotating; and a lead screw moving part connected to an upper part of the boss part and linearly moving upward / downward in conjunction with the rotation of the handle part; The optical axis aligning device for video shooting according to claim 12, wherein:   The optical axis alignment device for image capturing according to claim 12, further comprising a rotating unit that rotates the first reference unit and the second reference unit.   16. The optical axis alignment device for video shooting according to claim 15, wherein the rotating unit is stacked on the elevating unit.   12. The optical axis alignment device for video shooting according to claim 11, wherein the left and right gonio stages are stacked on the upper / lower gonio stages.   The alignment means is coupled so as to be able to transmit power, and the first horizontal line passing through the optical axis of the one camera, the first reference line and the second reference line can be aligned and adjusted. The apparatus for aligning optical axes for photographing images according to claim 1, further comprising an alignment driving unit for providing a driving force to the alignment means. The alignment driving unit includes:
The first vertical reference line and the second reference line selected from the first vertical line passing through the optical axis of the one camera and at least one first vertical reference line orthogonal to the first reference line The driving force is provided to the alignment means so that the alignment of any one of the at least one second vertical reference line orthogonal to the second vertical reference line is possible. An optical axis alignment device for video photography described in 1. The image data of the first reference line and the second reference line is input through the one camera, the horizontal alignment error of the first horizontal line and the first reference line and the second reference line is extracted, and the horizontal alignment error is extracted. An alignment control unit for generating a horizontal alignment drive signal for compensating for the above; and an alignment means coupled to the alignment means so as to be able to transmit power, and receiving the horizontal alignment drive signal, and receiving the first horizontal line, the first reference line, and the first reference line The optical axis aligning apparatus for photographing an image according to claim 1, further comprising an alignment driving unit that provides a driving force to the alignment unit so that two reference lines are aligned. The horizontal alignment error is
The first horizontal line, a slope formed by the first reference line or the second reference line, a separation distance between the first reference line and the second reference line, and the first reference line and the second reference line that are horizontally aligned, 21. The optical axis alignment device for video shooting according to claim 20, wherein the optical axis alignment device includes a separation distance of the first horizontal line. The alignment control unit includes:
The one camera receives image data of at least one first vertical reference line orthogonal to the first reference line and at least one second vertical reference line orthogonal to the second reference line through the one camera. Extracting a first vertical line passing through the optical axis of the first vertical line and a predetermined vertical alignment error between the first vertical reference line and the second vertical reference line, and generating a vertical alignment driving signal that compensates for the vertical alignment error;
The alignment driving unit includes:
Receiving the vertical alignment driving signal, and providing a driving force to the aligning means so that the first vertical line and the predetermined first vertical reference line and second vertical reference line are aligned. 21. The optical axis aligning device for video shooting according to claim 20. The predetermined first vertical reference line is:
Of the at least one first vertical reference line, the first vertical reference line closest to the first vertical line,
The predetermined second vertical reference line is:
21. The optical axis aligning device for video shooting according to claim 20, wherein the second vertical reference line closest to the first vertical line among the at least one second vertical reference line is the image shooting optical axis alignment device. The vertical alignment error is
A separation distance between the first vertical reference line and the second vertical reference line; and a separation distance between the first vertical reference line, the second vertical reference line, and the first vertical line that are vertically aligned. 21. The optical axis aligning device for video shooting according to claim 20, wherein the optical axis aligning device is for video shooting. The alignment driving unit includes:
A left-right gradient alignment driving unit providing a driving force for arcing the first reference unit and the second reference unit to the left / right;
A longitudinal gradient alignment driving unit that provides a driving force for arcing the first reference unit and the second reference unit forward / backward; and a driving force for linearly moving the first reference unit and the second reference unit up / down. Providing an upper / lower alignment drive;
21. The optical axis aligning apparatus for video shooting according to claim 18, wherein the left-right gradient alignment driving unit, the front-rear gradient alignment driving unit, and the upper / lower alignment driving unit are arranged in multiple stages. The alignment driving unit includes:
A left-right alignment driving unit for providing a driving force for linearly moving the first reference unit and the second reference unit to the left / right;
26. The optical axis alignment device for video shooting according to claim 25, wherein the left-right gradient alignment driving unit, the front-rear gradient alignment driving unit, the upper / lower alignment driving unit, and the left-right alignment driving unit are arranged in multiple stages. . The alignment driving unit includes:
A rotation driving unit for providing a driving force for rotating the first reference unit and the second reference unit;
27. The apparatus according to claim 26, wherein the left / right gradient alignment driving unit, the front / rear gradient alignment driving unit, the up / down alignment driving unit, the left / right alignment driving unit, and the rotation driving unit are arranged in multiple stages. Optical axis alignment device. The alignment control unit includes:
The second horizontal line passing through the optical axis of the other camera upon receiving the image data of the first reference line and the second reference line horizontally aligned through the other camera of the left / right eye cameras, and the horizontal alignment The horizontal alignment error of the first reference line and the second reference line is extracted, a horizontal alignment rig drive signal that compensates for the horizontal alignment error is generated, and the horizontal alignment rig is controlled by the rig control unit that controls the movement of the other camera rig. 21. The optical axis aligning device for video shooting according to claim 20, wherein a driving signal is transmitted. The horizontal alignment error is
The second horizontal line, a slope formed by the first reference line and the second reference line horizontally aligned, and a separation distance between the first horizontal line and the first reference line horizontally aligned with the second horizontal line. 30. The optical axis aligning device for video shooting according to claim 28, wherein:   The rig control unit receives an input of the horizontal alignment rig drive signal, and moves the rig of the other camera so that the second horizontal line and the first reference line and the second reference line that are horizontally aligned are horizontally aligned. 29. The optical axis alignment device for video shooting according to claim 28, wherein: The alignment control unit includes:
The image data of the predetermined first vertical reference line and the second vertical reference line is received through the other of the left-eye camera and the right-eye camera, and the predetermined first vertical reference line and second vertical reference line are received. Generating a vertical alignment rig driving signal for feedback control so that the second vertical line passing through the optical axis of the other camera is vertically aligned, and transmitting the generated signal to a rig control unit for controlling the movement of the other camera rig. 23. The optical axis alignment device for image photographing according to claim 22,   The rig control unit receives the vertical alignment rig drive signal and receives a second vertical line passing through the optical axis of the other camera, and the predetermined first vertical reference line and second vertical reference line that are vertically aligned. 32. The optical axis aligning device for video shooting according to claim 31, wherein the movement of the rig of the other camera is controlled so that they are aligned. An optical axis alignment method using the optical axis alignment apparatus for stereoscopic photography according to claim 1,
a) through one of the left / right eye cameras, the first reference line, the second reference line, and at least one first vertical reference line orthogonal to the first reference line and the second reference line; Receiving the input of image data of two vertical reference lines;
b) Based on the input image data of the first reference line and the second reference line, the first horizontal line passing through the optical axis of the one camera and the first reference line and the second reference line are aligned. Step to do;
c) a first vertical line passing through the optical axis of the one camera based on at least one input first vertical reference line and second vertical reference line; and the predetermined first vertical reference line and second vertical line Performing a baseline alignment;
d) through the other of the left / right eye cameras, the first reference line and the second reference line aligned in step b) and the at least one first vertical reference line and the second aligned in step c) Receiving image data of a vertical reference line;
e) a second horizontal line passing through the optical axis of the other camera based on the image data of the first reference line and the second reference line input in step d), and the predetermined input input in step d) Performing alignment of the first reference line and the second reference line; and f) light of the other camera based on the image data of the first vertical reference line and the second vertical reference line input in step d). And a second vertical line passing through the axis, and a step of aligning the predetermined first vertical reference line and the second vertical reference line inputted in the step d). Step b)
b-1) displaying the first reference line and the second reference line on the screen of the first horizontal line; and b-2) the displayed first horizontal line, the first reference line and the second reference line. 34. The optical axis alignment method for video shooting according to claim 33, further comprising: driving the alignment unit so that they are aligned horizontally. Step b)
b-3) extracting a slope formed by the first horizontal line, the first reference line or the second reference line, and a separation distance between the first reference line and the second reference line;
b-4) compensating for the gradient, compensating for the separation distance between the first reference line and the second reference line, and driving the alignment unit so that the first reference line and the second reference line are horizontally aligned;
b-5) extracting a distance between the first reference line and the second reference line horizontally aligned in b-4) and the first horizontal line; and b-6) the distance extracted in b-5). 34. The method of claim 33, comprising compensating for a distance and driving an alignment unit so that the first horizontal line and the horizontally aligned first and second reference lines are horizontally aligned. Optical axis alignment method for video shooting. Step c)
c-1) displaying the first vertical reference line and the second vertical reference line on the screen of the first vertical line; and c-2) displaying the displayed first vertical line and the first vertical reference line; 34. The method of claim 33, further comprising: driving the alignment unit so that the second vertical reference line is vertically aligned. Step c)
c-3) extracting a separation distance between the first vertical reference line and the second vertical reference line;
c-4) compensating for the separation distance extracted in c-3) and driving the alignment unit so that the first vertical reference line and the second vertical reference line are vertically aligned;
c-5) extracting a distance between the first vertical reference line and the second vertical reference line and the first vertical line vertically aligned in c-4); and c-6) the c-5 And the alignment unit is driven so that the first vertical line and the vertically aligned first vertical reference line and the second vertical reference line are vertically aligned. 34. The optical axis alignment method for video shooting according to claim 33. The step e)
e-1) displaying the first reference line and the second reference line horizontally aligned in c) on the screen of the second horizontal line; and e-2) the displayed second horizontal line and the first reference. 34. The method of claim 33, further comprising: driving a rig of the other camera so that the line and the second reference line are horizontally aligned. The step e)
e-3) extracting the second horizontal line, the slope formed by the first reference line or the second reference line, and the separation distance between the first reference line and the second reference line;
e-4) Compensate for the slope, compensate for the separation between the first and second reference lines, and rig the other camera so that the first and second reference lines are horizontally aligned. Driving
e-5) extracting a separation distance between the first reference line and the second reference line horizontally aligned in the e-4) and the second horizontal line; and e-6) the separation extracted in the e-5). Compensating for the distance and driving the rig of the other camera so that the second horizontal line and the horizontally aligned first and second reference lines are horizontally aligned. 34. The optical axis alignment method for video shooting according to claim 33. Step f)
f-1) displaying the predetermined first vertical reference line and the second vertical reference line input in d) on the screen of the second vertical line; and f-2) displaying the first vertical line. 35. The method of claim 33, further comprising: driving a rig of the other camera so that a reference line and a second vertical reference line are aligned with the second vertical line. Optical axis alignment method. Step f)
34. The rig of the other camera is feedback controlled so that the second vertical line and the first vertical reference line and the second vertical reference line are vertically aligned. Optical axis alignment method for video shooting.   The method of claim 5, wherein the plate is formed by a mirror, and the second reference line is formed by a reflection image of the first reference line reflected by the mirror. .   The optical axis for video shooting according to claim 6, wherein the plate is formed by a mirror, and the second vertical reference line is formed by a reflection image of the first vertical reference line reflected by the mirror. Alignment method.